These work quite well, BUT you must remove them to recharge Sony WF-1000XM5 earbuds. The earbuds fit inside the charging case while inside this product, and I can feel the magnet pull the earbuds in, but the earbuds apparently don't make solid enough contact with the charging pins. This product seems strong enough to remove and apply repeatedly, which surprises me. It's a little sock, like a condom, and you just have to line them up correctly. Like the earbuds, they are L and R. The earbuds have a pinhole for the mic, and this product has a corresponding tiny 3rd hole, that I initially mistook for a tear. If only the earbuds could charge while also inside this product, they would be 5 star. Read more